Question about 2006 Toyota Corolla

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06 Toyota Corolla LE. CEL came on with code P0121. have been having problems for months. Car loses power upon acceleration. Been in the shop numerous times with no resolution. I went to have my throttle body replaced as I am told the sensor is integrated with the throttle body but now my mechanic said he doesnt think that is the problem. Everything I read points to a faulty throttle body or sensor.

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6ya6ya
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Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: Another problem on my 2001 Toyota Corolla - P0171 system too lean

If you had a bad MAF, the check engine light would have come on instantly. Replacing the MAF will NOT cure your issue. P-0171 is a common code, and cleaning it always eliminates the P-0171. Regarding the sensor, there are 2 different ones, and they do NOT interchange. If your body shop put in an "aftermarket" air-fuel sensor (the one closest to the engine), you can expect hesitation issues.

Posted on Sep 29, 2008

sleepygsx
  • 98 Answers

SOURCE: P0420 code on Toyota Corolla

well thank you very much you have me blushing : ) i went to school for automotive and after seeing people be taken advantage of till it almost made me sick i chose to take my own business path, I might not be the best mech in the biz, but i would like to think im the most honest, i have trouble charging people ive never met before lol and usually give them 1/2 the price a normal shop would with out marking up my parts 50% like most shops also, once again thank you.to explain what is happening, the heated o2 sensor between the engine takes a waveform (voltage reading to determin the air/fuel mixture) then the mixture travels through the cat and is cleaned and comes out to the 2nd post o2 sensor, the computer checks these to make sure they are different and that the cat is doing its job by changine (cleaning) the exhaust flow. the reason you are having this code thrown is because both sensors are reading the same which means that the converter isnt doing its job. now this means that the cat is bad, the heated #2 o2 sensor is defective, or the #2 o2 sensor circut is open/shorted.Tthe answer to your problem to the best of my knowledge would first make sure that is the only code that your car is throwing (to make sure another problem isnt causing this one) if p0420 is the only code showing you will want to check through the entire exhaust from the engine exhaust housing back to make sure you have no exhaust leaks. you may have a p0130 which is the heated o2 in the front or a p0136 which is a problem with the other o2 post cat. these codes should show, if they dont i would still go over the wiring of the sensors from them to the ecu make sure they are not shorted, if you go to a shop with a scan tool they should be able to check the o2's with it and make sure your fuel trims are where they should be also. if only the p0420 i would guess there is a leak somewhere, all the heat cold heat cold back and forth can loosen bolts and strech metal joints in the exhaust system. if that doesnt help please let me know and i will research it more much harder, but this is what the manual for your car says and what i believe also, please let me know and i'll get back to you right away, also make sure the cat didnt just randomly go bad, but dont let them replace stuff say you want it tested and make sure they have the right tools to do it. take care and thanks very much again. any other problems with anything else send them my way first, take care have a good night

Erik
EZ Automotive/U.S. Army

Posted on Sep 19, 2008

  • 1 Answer

SOURCE: check engine light on a 2001 Toyota Corolla

I have had numerous problems with my 01 Corolla. Yikes! You need to understand that Toyota will not submitt to universal parts. You must use their parts. Especially on the Cat Converter. Further, don't EVER go to Meineke for repairs if you haven't already. I use www.partstrain.com to get my authentic parts. They are truly the bomb on pricing.

I had the p171 and p420 codes. I replaced the mass air flow sensor, cat converter, and put on new iridium spark plugs.

Posted on Nov 19, 2008

askjhuber
  • 59 Answers

SOURCE: Engine runs well, but won't accellerate.

Replace the throttle positions sensor. it tells the computer how to mix the air fuel ratio. when this is not working the comupter dont know what to do to the enigne to give it power.

Posted on May 17, 2009

  • 81 Answers

SOURCE: My car is a 2007 Toyota Corolla LE

P2716 Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT).

There are 3 things it could be.
It could be your ECM, shift solenoid valve SLT, or open or short in the circuit. I would just recommend saving the hassle and taking it to an ASE qualified mechanic.
Here is what is happening...
The linear solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation based on signals from the throttle position sensor and the vehicle speed sensor.

Posted on Oct 19, 2009

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not necessarily..visually check the car if required as for a mechanics assistance...this car has been rated one of the best..so i dont this u need to change them until u have a problem with it..extend ur warranty if needed...(got the foll on the net)

Warranty Information

Applicable Warranty*:
R & R of the Speed Sensor, Transaxle, and Torque Converter Clutch Assembly are covered under the Toyota Powertrain Warranty. This warranty is in effect for 60 months or 60,000 miles, whichever occurs first, from the vehicle's in-service date.
R & R of the Engine Control Module is covered under the Toyota Federal Emissions Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.

* Warranty application is limited to correction of a problem based upon a customer's specific complaint.

Have a nice day!
tc

Jun 09, 2008 | 2005 Toyota Corolla

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